JPS60156097A - Touch response unit for electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a touch response device for an electronic musical instrument, particularly when a keyboard is divided into one or more key ranges and musical tones corresponding to each key range are generated in different musical sound generation modes. The present invention relates to an electronic musical instrument whose key range division mode can be changed in response to a switch operation, and further relates to the use of a common key touch detection device for a plurality of keys in such an electronic musical instrument.

BACKGROUND ART An electronic musical instrument in which a common touch sensor is disposed below a plurality of keys arranged in a row, and musical tones are controlled by the output of the touch sensor generated when any key is pressed. is known, for example, from Japanese Utility Model Publication No. 56-313. On the other hand, recently, as seen in JP-A-56-36697 or JP-A-56-106286, the - row key shape is divided into two key ranges, and the treble side key range is used for melody performance. BACKGROUND ART Electronic musical instruments that can switch the key range division mode, such as using the bass side key range for accompaniment performance or using the entire key range for melody performance, have been developed and are being commercialized. By the way, when performing touch response control in this type of electronic musical instrument, if a touch sensor common to all keys as described above is applied, it is not possible to obtain an effective touch detection output in the key range division mode. Appropriate touch response control cannot be performed.

Purpose of the Invention The present invention has been made in view of the above-mentioned points, and is an electronic musical instrument in which the mode of key range division can be changed according to the operation of a changeover switch. The present invention aims to provide a touch response device that can be effectively used for control.

Summary of the Invention According to the present invention, the key touch detection device disposed in relation to each key of the keyboard is not common to all keys, but is separated at a predetermined position that may become a key range division point. A touch signal distribution means is provided in association with the plurality of key touch detection devices. The touch signal distribution means selects the outputs of the plurality of key touch detection devices according to the key range division mode selected by the changeover switch, and supplies the selected outputs to the musical tone forming circuit as a musical tone control signal. The musical tone forming circuit generates a musical tone signal corresponding to a key press in a musical tone generation mode corresponding to the key range division mode selected by the changeover switch, and also generates a musical tone signal corresponding to the key press. The musical tone signal is controlled according to the output signal of. In this way, a plurality of key touch detection devices are functionally divided and utilized according to the key area division mode, and effective touch response control is realized.

EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

In the embodiment described below, an electronic musical instrument is shown in which a single-stage keyboard 10 in which a plurality of keys are arranged in a row can be selectively divided into key ranges according to the operation of a changeover switch.

In the embodiment shown in FIG. 1, the keyboard 10 can be divided into two key ranges at one predetermined dividing position in the key arrangement, and a switch for this purpose is used for automatic bass chord performance selection. The single finger mode selection switch 5F-8W and the fingered chord mode selection switch FC-8W are also used. That is, when automatic bass chord performance in single finger mode or fingered chord mode is selected by turning on the switch sF-sw or FC-8W, the keyboard 10 is moved at a predetermined dividing position. For example, the high-pitched key range is used for melody performance, and the low-pitched key range is used for accompaniment performance (automatic bass chord performance). I try to use it for. The state in which the key range is divided in this way is hereinafter referred to as a divided mode. On the other hand, switch 5F-8W
When both FC-3W and FC-3W are turned off and automatic bass chord performance is not selected, the above-mentioned key range division is not performed and the entire range of the keyboard 10 is used for a common musical sound generation mode, such as melody performance. do. The state in which the key range is not divided in this way is hereinafter referred to as normal mode. Of course, the normal mode is also one of the key range division modes that can be selected by a changeover switch. Each switch 5F-8W, FC
The output of -SW is given to OR circuit 11 and used as division mode signal SPL. This split mode signal SPL
corresponds to the output signal of the changeover switch.

When the signal SPL is °゛1'', it indicates the split mode, and when the signal SPL is °゛0
” indicates normal mode.

Key touch detection devices 12A and 12B are provided in association with the six keys of the keyboard 10 (for example, below the six keys), and these key touch detection devices 12A and 12B are connected to the two keys with the above-mentioned predetermined division position as a boundary. It is divided. Of the key touch detection devices divided into two parts, the one corresponding to the treble side key area is called the first touch sensor 12A, and the one corresponding to the bass side key area is called the second touch sensor 12B. do. As these sensors 12A and 12B,
It is possible to use any other type of wood such as those shown in Japanese Patent No. 313.

Key switches i[lKs are provided corresponding to the six keys of the keyboard 10, and the key press detection circuit 13 selects each key switch 1.
Based on the output of 0KS, key press data from six keys pressed or released, ie, key code KC, is distributed to output A or B according to the division mode signal SPL. The key press data distributed to the output A of the distribution circuit 14 is referred to as a melody key code MKC, and a musical tone signal corresponding to this melody key code MKC is formed in a tone generating circuit 15, which will be described later, in a musical tone generation manner for playing a melody. Ru. On the other hand, distribution circuit 14
The key press data distributed to the output B of the low key range key code L
Based on this key code LKC, the accompaniment key code forming circuit 16 generates an accompaniment key code AKC (
A musical tone signal corresponding to the accompaniment tone key code AKC is formed in a musical tone generation mode for accompaniment (for automatic bass chord performance) in the musical tone forming circuit 15.

An example of the distribution circuit 14 is shown in FIG. In the normal mode, the output of the AND circuit 17 becomes 0'' due to OI+ of the signal SPL, the distributor 18 controlled by this output enters the A output selection state, and all key codes KC from the key press detection circuit 16 are output. distributed to output A,
Output as melody key code MKC. In this way, the entire key range of the keyboard 10 is made to correspond to the manner in which musical tones are generated for melody performance. On the other hand, in split mode, the signal SPL
'1' enables the AND circuit 17, and the distributor 18 is controlled according to the output of the comparator 19 added to the inputs of the AND circuit 17. a key code 1-'KC from the key press detection circuit 16;
Compare the reference key code 1'KCo (this corresponds to the key code of the key located adjacent to the predetermined division position described above) that is fixedly added to the B input, and when A≦B, the signal +11
Outputs 1+, otherwise outputs “0”. In this way, in the split mode, it is determined whether the pressed key is on the treble side (belongs to the treble side key range) or the bass side (belongs to the bass side key range) from the predetermined split position, and if it is on the treble side ( If the comparison result is A>B), distribute the key code KC to the output A of the distributor 18 and output it as the melody key code MKC, and if it is on the bass side (if the comparison result is A≦B), distribute the key code KC. It is distributed to the output B of the unit 18 and output as a low key range key code LKC.

Returning to FIG. 1, the accompaniment tone key code forming circuit 16 forms accompaniment tone key codes AKC as follows according to the outputs of the respective switches 5F-8W and FC-8W. First, if the fingered chord mode selection switch FC-8W is on, the input low range key code LKC is output as is as the accompaniment tone key code AKC for the chord tone, and the input key code ILKC is output as is. A basic chord (chord) is detected, an automatic bass tone key code is created, and this is output as an accompaniment tone key code AKC.

On the other hand, single finger mode selection switch 5F-
If 8W is on, key codes for the chord tone and automatic bass tone are formed based on the input key code LKC (this corresponds to the chord, that is, the root note of the chord), and these are converted to the accompaniment tone key code AKC. Output as . In this case, the code type, such as major or minor, is appropriately designated by a switch or the like (not shown). In addition, both switches 5F-
8W.

For example, when FC-8W is turned on at the same time, priority is given to 5F-8W. Furthermore, when both switches are off, nothing is output from the circuit 16. This accompaniment tone key chord forming circuit 16 can be appropriately configured to have a structure known from automatic bass chord playing devices.

The sound generation assignment circuit 20 is for allocating a pressed key to one of a specific number N of musical tone forming channels, and assigns the key code KC* of the pressed key and a key-on signal (for example, in a time-division manner) to the assigned channel. Output KON. The tone generation mode of each channel is fixed and changes according to the key range division mode. A division mode signal SPL is applied to the sound generation assignment circuit 20, and the mode of key range division is informed by this signal SPL. - As an example, the signal SP
When L is ``O゛'', that is, in normal mode, all N channels are assigned to the melody key code MKC (that is, for the tone generation mode for melody performance).
use. On the other hand, when the signal SPL is II I +1, that is, in the split mode, the N channels are divided into two groups, one for melody and one for accompaniment, and one of the melody channel groups is used for assigning the melody key code MKC (i.e. The other accompaniment channel group is used for assigning the accompaniment tone key code AKC (that is, for the accompaniment tone generation mode). For example, if N=6, the first
The second channel is used for assigning melodic key codes MKC, and the third to sixth channels are used for assigning accompaniment key codes A and KC.

The musical tone forming circuit 15 has N musical tone forming channels (these channels may use a common musical tone forming means in a time-sharing manner, or may have individual musical tone forming means in parallel). It forms a tone signal based on the key code KC* given from the sound generation assignment circuit 20 and the key-on signal KON. That is, each musical tone forming channel has a pitch corresponding to the key code KC* assigned to its own channel,
In addition, a musical tone signal to which an amplitude envelope corresponding to the key-on signal KOH is added is formed. At this time, a division mode signal SPL is supplied to the musical tone forming circuit 15, and musical tone signal formation in each channel is based on this signal SPL in accordance with the mode of key range division.

The musical tones are generated in a similar manner.

At that time, touch signals TD1. According to TD2, touch response control (variable control of various musical sound control parameters such as musical sound signal pinch, timbre, volume, effect, etc. in accordance with the touch signal) is performed according to the key range division mode. The musical tone signal formed by the musical tone forming circuit 15 is given to the sound system 22 and generated.

The touch signal distribution means 21 includes switches 5F-8W.

The outputs of the first and second touch sensors 12A and 12B are selected according to the key range division mode selected by the FC-8W, and the musical tone control signal, that is, the touch signal 4TD1 or TD2.
The signal is supplied to the musical tone forming circuit 15 as a signal. In order to make it possible to individually select whether or not to perform touch control on melody sounds and accompaniment sounds, a melody sound touch control selection switch MT-8W and an accompaniment sound touch control selection switch AT are provided.
-SW is provided, and these switches MT-8
The gates 1-23, 24, and 25 are controlled by the outputs of W and AT-8W and the split mode signal 5PL (outputs of the twin switches 5F-8W and FC-8W).

The output of the first touch sensor 12A corresponding to the treble side key range is input to the gate 26, and this gate 23 is connected to the switch M.
Controlled by T-8W. The output of the second touch sensor 12B corresponding to the bass side key range is input to the gate 24, and this gate 24 receives the inverted signal S of the split mode signal SPL.
It is controlled by the output signal of the AND circuit 26, which is the AND logic of PL and the output of the switch MT-8W. Similarly, the output of the second touch sensor 12B is input to the gate 25, and the gate 25 is controlled by the output signal of the AND circuit 27, which is the AND logic of the split mode signal SPL and the output of the switch AT-8W. Gates 26 and 24
The outputs of are mixed through diodes 28 and 29 respectively,
The touch signal TD1 is supplied to the tone forming circuit 15. Mixing by diode 28°29 is Ga 1-23
, 24 having a higher signal level is derived as a touch signal TDI. The output of the gate 25 is supplied to the tone forming circuit 15 as touch signals T and D2.

Considering the case where touch control is applied to both the melody sound and the accompaniment sound, the switches MT-SW, AT-SW
are both on, each output signal is °“1”,
Gate 23, AND circuits 26 and 27 are enabled. Therefore, the first touch sensor 12A corresponding to the treble side key range
The output always passes through the gate 26, and the touch signal TD
[Derived as [. When the split mode signal SPL is 'O', that is, in the normal mode, the signal SPL is '1'.
'', the output signal of the AND circuit 26 is "' 1
” (!), and the gate 24 is enabled. At this time, the output signal of the AND circuit 27 becomes “0” due to the signal SPL being “0”.
0'", and the gate 25 is not enabled. On the other hand, when the split mode signal SPL is 1", that is, in the split mode, the output signal of the AND circuit 27 is 1", and the gate 25 is enabled. However, gate 24 is AND circuit 2
6 is not enabled by the output signal "'0"'.

From the above, to summarize the touch signal distribution mode according to the key range division mode, first, in the normal mode, the first touch sensor 12A and the second touch sensor 12B
The outputs of are respectively K-1-23.

24 and is derived as a touch signal TD1. Specifically, in this case, the touch sensors 12A, 12
Among the outputs of B, the one with a higher signal level is the touch signal TD.
1. Note that in this case, the touch signal TD
2 is not generated. Next, in the split mode, the output of the first touch sensor 12A is derived as a touch signal TD1 via the gate 26, and the output of the first touch sensor 12B is output as a touch signal TD1.
The output is derived via the gate 25 as the touch signal TD2. In the musical tone forming circuit 15, the touch signal TD
[ is used for touch response control of the melody sound, and touch signal TD2 is used for touch response control of the accompaniment sound. Therefore, in the normal mode in which musical tones in all key ranges are formed in a musical sound generation mode for melody performance, the outputs of the touch sensors 12A, 12B corresponding to all key ranges are selectively derived as touch signals TDi for melody sounds, occurrence.

In the split mode in which the modes are different for the treble side key area and the bass side key area, the touch sensors 12A, 1 of the corresponding key area are
The outputs of 2B are selected and derived separately as touch signals T-D1 and TD2, respectively.

If touch response control of melody sounds or accompaniment sounds is not performed, use the corresponding switch MT-8W or AT.
-8W should be turned off, and the touch signal T
Generation of Dl or TD2 is prohibited. These switches MT-8W and AT-8W are not essential; a single switch may be used to control touch response on/off, or it may be possible to control touch response at all times without providing a switch. You can also do this. Further, the mixing of the outputs of the gates 26 and 24 is not limited to mixing using the diodes 28 and 29, but may be, for example, a method that averages the Ryokawa forces, or any other appropriate method.

In the musical tone forming circuit 15, when the division mode signal SPL is "0", that is, in the normal mode, musical tone signals are formed in a musical tone generation mode for melody performance (with a tone selected for melody performance) on all channels. At the same time, touch response control is performed according to the touch signal TD1 for melody sound. When the division mode signal SPL is 1'', that is, in the division mode, musical tone signals are transmitted in different manners between the melody channel group (for example, the first and second channels) and the accompaniment channel group (for example, the third to sixth channels). That is, in the melody channel group, a musical tone signal is formed in a musical tone generation mode for melody performance, and touch response control is performed according to the touch signal TDi, and in the accompaniment channel group, a musical tone signal is generated in a musical tone generation mode for accompaniment (accompaniment A musical tone signal is formed (using the tone selected in 1), and touch response control is performed in accordance with the accompaniment tone touch signal TD2.

The musical tone forming circuit 15, which forms musical tone signals in different musical tone generation modes depending on the key range division mode as described above, can be easily constructed based on known technology. This is shown in Figure 3. A musical tone forming circuit with such a configuration is disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 56-366.
97, so it will be briefly explained here.

In the musical tone forming circuit 15 of FIG. 3, tone generating means and switching circuits 30-1 to 30-6 are provided in parallel for each of N=6 channels (c11i to Ch6). The sound generation allocation circuit 207 and the like are time-divisionally given each 1-v7rAy (D'f-).

- Code KC* and key-on signal KON are launched into launch circuits 31-1 to 31-6 corresponding to each channel, respectively, and sound source and opening/closing circuits 30-1 to 60-6 to which the launched key codes and key-on signals correspond are given to each. The launch control signals Y1 to Y6 are timing signals synchronized with the time division timing of each channel.

In this embodiment, the first and second channels (C) are 11°C.
Since h2) is always used for melody performance, the corresponding sound source and opening/closing circuit 30-1.
1 is added, and the generated tone and touch response are controlled accordingly.

3rd to 5th channels (ch3 to ch5)
is used for switching between melody performance and chord performance depending on the key range and division mode, so the corresponding sound source and opening/closing circuits 30-3 to 60-5 have the above-mentioned melody tone selection output TC-M. In addition to the touch signal TDl, the outputs TC and C of the chord tone selection circuit 66 and the touch signal TD
2 and a split mode signal SPL are respectively given, and depending on the degree of signal SPL '0'' or '1'', musical tone control based on TC, -M and TDi or musical tone control based on TC-C and TD2 is applied. You can switch to either one.

The sixth channel (c b 6 ) is switched and used for melody performance or bass accompaniment depending on the key range division mode, so the corresponding sound source and opening/closing circuit 30-6 has the above-mentioned melody tone selection output. TC/M and touch signal TD
1, the output TC-B of the base tone color selection circuit 64, the touch signal TD2, and the split mode signal SPL are respectively given, and depending on the signal SPL of 0'' or 1'', TC-B is applied.
It is possible to switch to either musical tone control based on M and TDl or musical tone control based on TC-B and TD2.

The outputs of the circuits 30-1 and 30-2 are mixed by resistors R1 and R2 and input to the melody tone circuit 35. The outputs of the circuits 60-6 to 60-5 are mixed by resistors R6 to R5 and applied to the distribution circuit 36, and the divided mode signal SP
When L is °°0''', it is given to the melody tone circuit 65 via output A, but when L is ++1 ++, it is given to output B.
The signal is applied to the chord tone color circuit 67 via the chord tone color circuit 67. Circuit 30-
The output of 6 is given to a distribution circuit 68, and the signal SPL is
When the signal is 0'', it is applied to the melody tone circuit 35 through the output A, but when it is 1'', it is applied to the base tone circuit 39 through the output B. Each tone color circuit 35, 37.

69 is the output TC・M, T of each tone selection circuit 62 to 34.
CC and TC-B are given separately. Further, a touch signal TDI is applied to the melody timbre circuit 65, a touch signal TD2 is applied to the chord and bass timbre circuits 37 and 39, and touch response control is performed in accordance with these touch signals. The gates 40 and 41 provided on the output side of the chord tone color circuit 37 and the base tone color circuit 39 are controlled by the chord tone generation timing signal and the bass tone generation timing signal, and are for automatically controlling the generation timing. It is.

In the embodiment shown in FIG. 4, the keyboard 10 can be divided into a high-pitched key range and a low-pitched key range by selectively setting one of the three dividing positions in the key arrangement as a boundary. The touch response control is applied to a key range corresponding to a tone generation mode for solo performance, which will be described later. First to fourth touch sensors 121 to 124 are provided corresponding to each of the four key areas divided at three predetermined division positions, and their outputs are sent to the touch signal distribution means 211.
given to. Divided position designation switches sw1 to sw3 are provided corresponding to the three divided positions, of which one
Select the key range division mode by selectively turning on one (or turning on none). These switches sw
The outputs of 1 to sw3 are applied to the distribution circuit 141 and also to the OR circuit 42, and the output of the OR circuit 42 is used as the division mode signal SPL as in the previous embodiment.

Same code as in Figure 1 10KS, 13.16.20°22.
Switches and circuits labeled 5F-8W and FC-8W have the same function. The distribution circuit 141 corresponds to the distribution circuit 14 in FIG. 1, and divides into a treble side key area and a bass side key area based on the division positions specified by the distribution position designation switches SWI to SW3. The key press data, that is, the key code KC is distributed into the melody key code MKC and the low key range key code LKC in accordance with the key press data. FIG. 5 shows an example of its internal configuration, in which each switch SW1-s
The output of w3 is input to the division position key code memory 43, and a key code K Co (K C'
o takes three values depending on swl to sw3) is read out. In the comparator 44, the key pressing key code KC,! : Compare the above key code KCo added to the B input, and when A>B, output '1'' and select the A output in the distributor 45, and when A≦B, output PA0'' and distribute. 45 to select the B output. As a result, the key code KC belonging to the treble side key range of the selected division position is distributed as the melody key code MKC via the A output,
The key code KC belonging to a key range on the bass side is distributed as low key range key codes LK and C via the B output. Note that when the switches sw1 to SW6 are all off (in the twin normal mode), the key code KCoO value read from the memory 43 is "0", and the distributor 45
is always in the A output selection state.

Returning to FIG. 4, in this embodiment, in addition to melody performance and accompaniment performance, solo performance can also be performed. Solo performance involves selecting the highest note among the melody notes played simultaneously, and generating the corresponding musical tone in a unique tone generation mode for solo performance (with the tone selected for solo performance). It is a performance effect. In this embodiment, touch response control is applied only to solo performance sounds. Distribution circuit 14
The highest note detection circuit 46 receives the melody key code MKC outputted from 4) and selects the highest note key code from among the one or more melody key codes MKC4) that are pressed at the same time, and selects it as a solo key. Output as code SKC. A solo musical tone forming circuit 151 receives a solo key code SKC and forms a musical tone signal corresponding thereto in a musical tone generation mode for solo performance. At this time, a touch signal TD is applied from the touch signal distribution means 211, and touch response control according to this touch signal TD is applied to the solo performance sound.

The touch signal distribution means 211 includes a division position designation switch s.
One or more key ranges to be selected are specified according to the outputs of w1 to sw3, and based on the key press data of those key ranges, touch sensors 121 to 12 correspond to the key range to which the key press data belongs.
4 outputs are selected. For details, switch
The distribution circuit 141 specifies one or more key ranges to be selected according to the outputs of w1 to sw3, and the melody key code MKC is used as key press data corresponding to the specified key range. is obtained. Among the melody key codes MKC, the highest note detection circuit 46 selects the solo key code SKC.
KC is the solo key range detection circuit 4 of the touch signal distribution means 211
7 is given. Based on the value of the solo key code SKC, the solo key range detection circuit 47 detects to which of the key ranges corresponding to the touch sensors 121 to 124 the key corresponding to this key code belongs.

Each touch sensor 1 is connected to the four inputs A7D of the selector 48.
Outputs 21 to 124 are respectively inputted 1, and one of the inputs A to D is selected according to the output of the solo key range detection circuit 47. In this way, the selector 48 selects the outputs of the touch sensors 121 to 124 corresponding to the key range to which the solo key code SKC belongs, and this is applied to the solo tone forming circuit 151 as a touch signal TD.

The melody and accompaniment musical tone forming circuit 152 is substantially the same as the musical tone forming circuit 15 of FIG. 1, except that it does not perform touch response control. However, a means similar to the touch signal distribution means 21 of FIG. 1 may be provided in the embodiment of FIG. 4 so that the melody and accompaniment tone forming circuit 152 also performs touch response control.

In each of the above embodiments, an automatic accompaniment function consisting of an automatic bass tone and an automatic chord tone is adopted as the musical sound generation mode corresponding to the bass side key range in the key range division mode, but the automatic accompaniment function consisting of an automatic bass tone and an automatic chord tone is adopted. may be omitted. Alternatively, the automatic accompaniment function may be completely turned off and accompaniment performance (chord performance) may be performed simultaneously with manual performance. In that case, the accompaniment tone key code forming circuit 16 shown in FIGS. 1 and 4 may be omitted.

Note that when the musical tone forming circuit has a digital circuit configuration, the touch signal TD1. TD2. Either an analog/digital converted TD may be supplied to the tone forming circuit, or a touch sensor that outputs a digital signal may be used.

In each of the above embodiments, when the key range division mode is selected, the keyboard is divided into two key ranges: a high-pitched key range and a low-pitched key range, but the keyboard is not limited to this and can be divided into three or more key ranges. It is also possible to use multiple key range division modes with different numbers of key range divisions (for example, a first division mode that divides the key range into two key ranges, and a second division mode that divides the key range into three key ranges). ) may be provided and selected.

Effects of the Invention As described above, according to the present invention, a plurality of key touch detection devices are provided separated at least at positions where the key range is likely to be divided, and the key touch detection devices are configured to detect key touch detection in accordance with the key range division mode selected by the changeover switch. Since the output of the key touch detection device is selected and used as a tone control signal, no matter how the key range division mode changes, the touch signal of the key range to which the pressed key belongs can be selectively derived. This can be used for touch response control of musical tone signals corresponding to the pressed keys.

Furthermore, it is possible to use a common key touch detection device within each key area, which is economical.

[Brief explanation of the drawing]

FIG. 1 is an electrical block diagram showing an embodiment of the present invention;
2 is a block diagram showing an example of the distribution circuit of FIG. 1, FIG. 3 is a block diagram showing an example of the musical tone forming circuit of FIG. 1,
Figure 4 shows another fruit of this invention. FIG. 5 is a block diagram showing an example of the distribution circuit of FIG. 4. 10. Keyboard, 5F-8W, FC-8W... automatic accompaniment mode selection switch that also serves as a changeover switch means;
sw1 to sw3/split position designation switch, 12A, 12
B, 121-124・Touch sensor, 13・Key press detection circuit, 14, 141... Distribution circuit, 15, 151, 15
2. Musical tone forming circuit, 21.211...Touch signal distribution means.

Claims (1)

[Scope of Claims] 1. A keyboard consisting of a plurality of keys; 1. Key ranges are selectively divided at predetermined positions in the key arrangement of the keyboard, and musical sounds are generated in different ways corresponding to each key range. a musical tone forming circuit that forms a musical tone signal corresponding to a key press on the keyboard in a musical tone generation manner according to the key range division manner selected by the changeover switch means; a plurality of key touch detection devices arranged in relation to each key and separated at least at the predetermined position; and selecting an output of the key touch detection device according to the key area division mode selected by the changeover switch means. and touch signal distribution means for supplying a musical tone control signal to the musical tone forming circuit. 2. The touch signal distribution means selectively derives the output of the key touch detection device corresponding to each key range according to the key range division mode selected by the switch means, based on the output of the changeover switch means, 2. The touch response device for an electronic musical instrument according to claim 1, wherein each of the derived output signals is supplied to the musical tone forming circuit and used for controlling musical tones in corresponding key ranges. 3. The changeover switch means can select whether to divide the key range or not divide the key range based on one or more division positions, and the touch signal distribution means:
When performing key range division, the outputs of the key touch detection devices are selectively derived for each key range, but when the key range division is not performed, the outputs of all the key touch detection devices are derived. 3. The touch response device for an electronic musical instrument according to claim 2, wherein 4. The touch signal distribution means specifies one or more key ranges to be selected according to the output of the changeover switch means,
2. The touch response device for an electronic musical instrument according to claim 1, wherein the output of the key touch detection device corresponding to the key range to which the key press data belongs is selected based on the key press data of those key ranges. 5. The touch signal distribution means corresponds to the key range to which the key press data belongs, according to the key press data belonging to a key range on the treble side or the bass side of the division position specified according to the output of the changeover switch means. Claim 4: The output of the key touch detection device is selected, and touch response control is selectively performed on musical tone signals corresponding to the key range.
A touch response device for an electronic musical instrument as described in Section 1.